Milling machine



Nov. 4, 1924. l Y 1,514,423

fr. G. BRAY MILLING MACHINE Filed Jan. 6, 1922 2 Shoals-Shag?. 1

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T. G. BRAY MILLING MACHINE Filed Jan. 6, 1922 l2 Sheets-Sheen 2 INVENTOR m' n M' WITN IIICG Patented Nov. 4, 1924.

UNITED sr.airis THOMAS e. BRAY, orivoatrnwimrnssono, VNORTH ciiaonnva.

MILLING .Application filed January 6,- 1922.- Seria-l No. 527,440.

To all whom t may coince/Mi.'

Be it known that I, THoMAs G. BRAY, a citizen of the United States, residing at Northwilkesboro, in the county of Vilkes and State of North Carolina, have invented new and useful Improvements in Milling Machines, of which the following is a speciication.

This invention relates to a device for forming knobs which are designed to` be used on furniture and the like, the general object of the invention being to provide means for feeding the blocks from which the knobs are made, to the cutting tools.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illust-rated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters dene-te like or corresponding parts throughout the several views, and in which :e-d

Figure 1 is a side view of the invention.

Figure 2 is a plan view.

Figure 3 is a detail view showing the driving means for the carrier.

Figure 4 is a detail sectional view through the carrier and showing how the spindles are arranged therein.

Figure 5 is a detail sectional view showing the driving connections between the shaft 9 and the shaft 18.

Figure 6 is a view showing how the nishing cutter acts upon the knob.

In these views 1 indicates a base and 2 an upright frame which is connected with the base. This upright frame carries the motors 3 which actuates the cutting tools 4, 4 and 4 which are secured to the depending shafts 5 of the motors. A vertically arranged shaft 6 is journaled in the base and in an arm 2 which is supported from the frame 2 and a horizontally arranged wheel or carrier 7 is secured to said shaft. This wheel has teeth on its periphery which are engaged by a pinion 8 located on a shaft 9, journaled in the frame 10 which is Supported by the upright frame. The shaft 9 is rotated by a motor 11. The wheel 7 has rotatably' mounted therein a plurality of spindles 12, the upper end of each of which is provided with the screw 13. The lower end of each spindle is provided with a sprocket wheel 14. These wheels 14 are adapted to engage with an endless Chain 15, as they approach the cutters 4, and with an endless chain 16 after they pass the cutters. The endless chain 15 is carried by the sprockets 17 supported on the shafts 18 and the chain 16 is carried by the sprockets 17 on the shafts 18. The first shaft 18 is connected with the second shaft 18 by the gears 19 and said second shaft 18 is connected by the endless chain 9 with the shaft 9, said chain passing over sprockets 9 on said shafts. Thus the chains will be driven from the motor 11 and the chain 16 will be driven in an opposite direction from the chain 15, thus the spindles will be rotated in'one direction as they approach the cutters and will be rotated in an opposite direction after they have left the cutters.

From the above it will be apparent that when the blocks A are held against the screws 13, carried by the spindles, the screws will enter the blocks and thus connect them with the spindles. The blocks are thus fed against the cutter-s 4, 4 andl 4 so that they will be formed into knobs and after leaving the cutters the spindles will be rotated in an opposite direction so that when the finished knobs are seized the screws will disengage them. By this invention the knobs can be quickly and easily formed with but little work on the part of the o-perator.

As shown in the drawings, I use three cutting tools, the first cutter 4 will have saws on it forv cutting away a great part of the block to roughly form the knob. The second cutter 4 will also carry saws which will act to further shape the block and the third cutter 4 will comprise an abrasive member for finishing the knob. This cutter 4" is shown in Figure 6.

It is thought 'from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the. combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What I claim is An apparatus of the class described comprising a wheel-shaped carrier, means for rotatably supporting the same, a motor for rotating the carrier, a plurality of spindles rotatably mounted 0n the carrier, a sprocket connected with each spindle, a screw on the upper end of each spindle for engaging` a work piece tohold the same. in place, a number of forming tools for shaping the Work pieces as they are brought against the tools by the movement of the carrier, motors for driving the tools, an endless chain arranged to engage the sprockets of the spindles as the spindles approach the tools, a second endless chain arranged to engage the sprockets of the spindles leaving the tools, supporting means for the chains, and means for driving the chains in opposite directions.

In testimony whereof I affix my signature.

THOMAS Gr. BRAY. 

